Merge git://git.denx.de/u-boot-dm

28 files changed, 530 insertions, 60 deletions

diff --git a/include/config_fallbacks.h b/include/config_fallbacks.h
index 508db5626b..ddfe0450d2 100644
--- a/include/config_fallbacks.h
+++ b/include/config_fallbacks.h
@@ -91,4 +91,10 @@
 #undef CONFIG_IMAGE_FORMAT_LEGACY
 #endif
 
+#ifdef CONFIG_DM_I2C
+# ifdef CONFIG_SYS_I2C
+#  error "Cannot define CONFIG_SYS_I2C when CONFIG_DM_I2C is used"
+# endif
+#endif
+
 #endif	/* __CONFIG_FALLBACKS_H */
diff --git a/include/configs/apalis_t30.h b/include/configs/apalis_t30.h
index 3cde923b5f..61809fcdbe 100644
--- a/include/configs/apalis_t30.h
+++ b/include/configs/apalis_t30.h
@@ -26,10 +26,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC
diff --git a/include/configs/beaver.h b/include/configs/beaver.h
index 164b2dd951..5d765f3d36 100644
--- a/include/configs/beaver.h
+++ b/include/configs/beaver.h
@@ -40,10 +40,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC
diff --git a/include/configs/cardhu.h b/include/configs/cardhu.h
index 09129c7767..758b7ad392 100644
--- a/include/configs/cardhu.h
+++ b/include/configs/cardhu.h
@@ -43,12 +43,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_I2C_MULTI_BUS
-#define CONFIG_SYS_MAX_I2C_BUS		TEGRA_I2C_NUM_CONTROLLERS
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC
diff --git a/include/configs/colibri_t30.h b/include/configs/colibri_t30.h
index a582e25516..ce6f23b8c4 100644
--- a/include/configs/colibri_t30.h
+++ b/include/configs/colibri_t30.h
@@ -25,10 +25,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC
diff --git a/include/configs/dalmore.h b/include/configs/dalmore.h
index ff7ec4a93b..0b04ee67b3 100644
--- a/include/configs/dalmore.h
+++ b/include/configs/dalmore.h
@@ -36,12 +36,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_I2C_MULTI_BUS
-#define CONFIG_SYS_MAX_I2C_BUS		TEGRA_I2C_NUM_CONTROLLERS
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC
diff --git a/include/configs/jetson-tk1.h b/include/configs/jetson-tk1.h
index d67c025b9c..a7d76650ce 100644
--- a/include/configs/jetson-tk1.h
+++ b/include/configs/jetson-tk1.h
@@ -25,12 +25,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_I2C_MULTI_BUS
-#define CONFIG_SYS_MAX_I2C_BUS		TEGRA_I2C_NUM_CONTROLLERS
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC
diff --git a/include/configs/nyan-big.h b/include/configs/nyan-big.h
new file mode 100644
index 0000000000..cf331ab207
--- /dev/null
+++ b/include/configs/nyan-big.h
@@ -0,0 +1,74 @@
+/*
+ * (C) Copyright 2014
+ * NVIDIA Corporation <www.nvidia.com>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#include <linux/sizes.h>
+
+#include "tegra124-common.h"
+
+/* High-level configuration options */
+#define V_PROMPT			"Tegra124 (Nyan-big) # "
+#define CONFIG_TEGRA_BOARD_STRING	"Google/NVIDIA Nyan-big"
+
+/* Board-specific serial config */
+#define CONFIG_SERIAL_MULTI
+#define CONFIG_TEGRA_ENABLE_UARTA
+#define CONFIG_SYS_NS16550_COM1		NV_PA_APB_UARTA_BASE
+
+#define CONFIG_BOARD_EARLY_INIT_F
+
+/* I2C */
+#define CONFIG_SYS_I2C_TEGRA
+#define CONFIG_CMD_I2C
+
+/* SD/MMC */
+#define CONFIG_MMC
+#define CONFIG_GENERIC_MMC
+#define CONFIG_TEGRA_MMC
+#define CONFIG_CMD_MMC
+
+/* Environment in eMMC, at the end of 2nd "boot sector" */
+#define CONFIG_ENV_IS_IN_MMC
+#define CONFIG_SYS_MMC_ENV_DEV		0
+#define CONFIG_SYS_MMC_ENV_PART		2
+#define CONFIG_ENV_OFFSET		(-CONFIG_ENV_SIZE)
+
+/* SPI */
+#define CONFIG_TEGRA114_SPI		/* Compatible w/ Tegra114 SPI */
+#define CONFIG_TEGRA114_SPI_CTRLS	6
+#define CONFIG_SPI_FLASH
+#define CONFIG_SPI_FLASH_WINBOND
+#define CONFIG_SF_DEFAULT_MODE         SPI_MODE_0
+#define CONFIG_SF_DEFAULT_SPEED        24000000
+#define CONFIG_CMD_SPI
+#define CONFIG_CMD_SF
+#define CONFIG_SPI_FLASH_SIZE          (4 << 20)
+
+/* USB Host support */
+#define CONFIG_USB_EHCI
+#define CONFIG_USB_EHCI_TEGRA
+#define CONFIG_USB_MAX_CONTROLLER_COUNT	2
+#define CONFIG_USB_STORAGE
+#define CONFIG_CMD_USB
+
+/* USB networking support */
+#define CONFIG_USB_HOST_ETHER
+#define CONFIG_USB_ETHER_ASIX
+
+/* General networking support */
+#define CONFIG_CMD_NET
+#define CONFIG_CMD_DHCP
+
+#define CONFIG_FIT
+#define CONFIG_OF_LIBFDT
+
+#include "tegra-common-usb-gadget.h"
+#include "tegra-common-post.h"
+
+#endif /* __CONFIG_H */
diff --git a/include/configs/rpi.h b/include/configs/rpi.h
index 4d5426e501..c94f411202 100644
--- a/include/configs/rpi.h
+++ b/include/configs/rpi.h
@@ -34,6 +34,7 @@
 #define CONFIG_DM
 #define CONFIG_CMD_DM
 #define CONFIG_DM_GPIO
+#define CONFIG_DM_SERIAL
 
 /* Memory layout */
 #define CONFIG_NR_DRAM_BANKS		1
@@ -51,6 +52,7 @@
 					 CONFIG_SYS_SDRAM_SIZE - \
 					 GENERATED_GBL_DATA_SIZE)
 #define CONFIG_SYS_MALLOC_LEN		SZ_4M
+#define CONFIG_SYS_MALLOC_F_LEN		(1 << 10)
 #define CONFIG_SYS_MEMTEST_START	0x00100000
 #define CONFIG_SYS_MEMTEST_END		0x00200000
 #define CONFIG_LOADADDR			0x00200000
@@ -92,9 +94,7 @@
 #endif
 
 /* Console UART */
-#define CONFIG_PL011_SERIAL
-#define CONFIG_PL011_CLOCK		3000000
-#define CONFIG_PL01x_PORTS		{ (void *)0x20201000 }
+#define CONFIG_PL01X_SERIAL
 #define CONFIG_CONS_INDEX		0
 #define CONFIG_BAUDRATE			115200
 
diff --git a/include/configs/sandbox.h b/include/configs/sandbox.h
index 2b03841d9d..657f751f3c 100644
--- a/include/configs/sandbox.h
+++ b/include/configs/sandbox.h
@@ -112,6 +112,12 @@
 #define CONFIG_SPI_FLASH_STMICRO
 #define CONFIG_SPI_FLASH_WINBOND
 
+#define CONFIG_DM_I2C
+#define CONFIG_CMD_I2C
+#define CONFIG_SYS_I2C_SANDBOX
+#define CONFIG_I2C_EDID
+#define CONFIG_I2C_EEPROM
+
 /* Memory things - we don't really want a memory test */
 #define CONFIG_SYS_LOAD_ADDR		0x00000000
 #define CONFIG_SYS_MEMTEST_START	0x00100000
diff --git a/include/configs/seaboard.h b/include/configs/seaboard.h
index 04e4f82759..5f77051d13 100644
--- a/include/configs/seaboard.h
+++ b/include/configs/seaboard.h
@@ -37,10 +37,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC
diff --git a/include/configs/tec-ng.h b/include/configs/tec-ng.h
index 51f87dacdb..e37b23359b 100644
--- a/include/configs/tec-ng.h
+++ b/include/configs/tec-ng.h
@@ -23,12 +23,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_I2C_MULTI_BUS
-#define CONFIG_SYS_MAX_I2C_BUS		TEGRA_I2C_NUM_CONTROLLERS
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC
diff --git a/include/configs/tegra-common.h b/include/configs/tegra-common.h
index d690045eb0..06853285a2 100644
--- a/include/configs/tegra-common.h
+++ b/include/configs/tegra-common.h
@@ -26,6 +26,7 @@
 #endif
 #define CONFIG_DM_SPI
 #define CONFIG_DM_SPI_FLASH
+#define CONFIG_DM_I2C
 
 #define CONFIG_SYS_TIMER_RATE		1000000
 #define CONFIG_SYS_TIMER_COUNTER	NV_PA_TMRUS_BASE
diff --git a/include/configs/tegra114-common.h b/include/configs/tegra114-common.h
index 555c237cbf..9eba5d517d 100644
--- a/include/configs/tegra114-common.h
+++ b/include/configs/tegra114-common.h
@@ -76,9 +76,6 @@
 #define CONFIG_SYS_SPL_MALLOC_START	0x80090000
 #define CONFIG_SPL_STACK		0x800ffffc
 
-/* Total I2C ports on Tegra114 */
-#define TEGRA_I2C_NUM_CONTROLLERS	5
-
 /* For USB EHCI controller */
 #define CONFIG_EHCI_IS_TDI
 #define CONFIG_USB_EHCI_TXFIFO_THRESH	0x10
diff --git a/include/configs/tegra124-common.h b/include/configs/tegra124-common.h
index 61e5026574..f2b3774da8 100644
--- a/include/configs/tegra124-common.h
+++ b/include/configs/tegra124-common.h
@@ -68,9 +68,6 @@
 #define CONFIG_SYS_SPL_MALLOC_START	0x80090000
 #define CONFIG_SPL_STACK		0x800ffffc
 
-/* Total I2C ports on Tegra124 */
-#define TEGRA_I2C_NUM_CONTROLLERS	5
-
 /* For USB EHCI controller */
 #define CONFIG_EHCI_IS_TDI
 #define CONFIG_USB_EHCI_TXFIFO_THRESH	0x10
diff --git a/include/configs/tegra20-common.h b/include/configs/tegra20-common.h
index 21bf977174..6330281df7 100644
--- a/include/configs/tegra20-common.h
+++ b/include/configs/tegra20-common.h
@@ -97,9 +97,6 @@
 #define CONFIG_EHCI_IS_TDI
 #define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 1
 
-/* Total I2C ports on Tegra20 */
-#define TEGRA_I2C_NUM_CONTROLLERS	4
-
 #define CONFIG_SYS_NAND_SELF_INIT
 #define CONFIG_SYS_NAND_ONFI_DETECTION
 
diff --git a/include/configs/tegra30-common.h b/include/configs/tegra30-common.h
index 443c842240..bfdbeb70d2 100644
--- a/include/configs/tegra30-common.h
+++ b/include/configs/tegra30-common.h
@@ -73,9 +73,6 @@
 #define CONFIG_SYS_SPL_MALLOC_START	0x80090000
 #define CONFIG_SPL_STACK		0x800ffffc
 
-/* Total I2C ports on Tegra30 */
-#define TEGRA_I2C_NUM_CONTROLLERS	5
-
 /* For USB EHCI controller */
 #define CONFIG_EHCI_IS_TDI
 #define CONFIG_USB_EHCI_TXFIFO_THRESH	0x10
diff --git a/include/configs/trimslice.h b/include/configs/trimslice.h
index 7c0064267d..a254f86409 100644
--- a/include/configs/trimslice.h
+++ b/include/configs/trimslice.h
@@ -34,10 +34,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC
diff --git a/include/configs/venice2.h b/include/configs/venice2.h
index 6897aa8aa3..8880de86c4 100644
--- a/include/configs/venice2.h
+++ b/include/configs/venice2.h
@@ -25,12 +25,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_I2C_MULTI_BUS
-#define CONFIG_SYS_MAX_I2C_BUS		TEGRA_I2C_NUM_CONTROLLERS
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC
diff --git a/include/configs/whistler.h b/include/configs/whistler.h
index 10e70d28b1..e083cbd07f 100644
--- a/include/configs/whistler.h
+++ b/include/configs/whistler.h
@@ -26,10 +26,7 @@
 
 /* I2C */
 #define CONFIG_SYS_I2C_TEGRA
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_SYS_I2C_SPEED		100000
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C
 
 /* SD/MMC */
 #define CONFIG_MMC
diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h
index 202f59b505..f17c3c2b38 100644
--- a/include/dm/uclass-id.h
+++ b/include/dm/uclass-id.h
@@ -19,6 +19,7 @@ enum uclass_id {
 	UCLASS_TEST_FDT,
 	UCLASS_TEST_BUS,
 	UCLASS_SPI_EMUL,	/* sandbox SPI device emulator */
+	UCLASS_I2C_EMUL,	/* sandbox I2C device emulator */
 	UCLASS_SIMPLE_BUS,
 
 	/* U-Boot uclasses start here */
@@ -29,6 +30,9 @@ enum uclass_id {
 	UCLASS_SPI_FLASH,	/* SPI flash */
 	UCLASS_CROS_EC,	/* Chrome OS EC */
 	UCLASS_THERMAL,		/* Thermal sensor */
+	UCLASS_I2C,		/* I2C bus */
+	UCLASS_I2C_GENERIC,	/* Generic I2C device */
+	UCLASS_I2C_EEPROM,	/* I2C EEPROM device */
 
 	UCLASS_COUNT,
 	UCLASS_INVALID = -1,
diff --git a/include/dm/ut.h b/include/dm/ut.h
index fa9eac0226..ec6146545b 100644
--- a/include/dm/ut.h
+++ b/include/dm/ut.h
@@ -89,6 +89,18 @@ void ut_failf(struct dm_test_state *dms, const char *fname, int line,
 	}								\
 }
 
+/* Assert that a pointer is not NULL */
+#define ut_assertnonnull(expr) {					\
+	const void *val = (expr);					\
+									\
+	if (val == NULL) {						\
+		ut_failf(dms, __FILE__, __LINE__, __func__,		\
+			 #expr " = NULL",				\
+			 "Expected non-null, got NULL");		\
+		return -1;						\
+	}								\
+}
+
 /* Assert that an operation succeeds (returns 0) */
 #define ut_assertok(cond)	ut_asserteq(0, cond)
 
diff --git a/include/dt-bindings/pinctrl/pinctrl-tegra.h b/include/dt-bindings/pinctrl/pinctrl-tegra.h
new file mode 100644
index 0000000000..ebafa498be
--- /dev/null
+++ b/include/dt-bindings/pinctrl/pinctrl-tegra.h
@@ -0,0 +1,45 @@
+/*
+ * This header provides constants for Tegra pinctrl bindings.
+ *
+ * Copyright (c) 2013, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Author: Laxman Dewangan <ldewangan@nvidia.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef _DT_BINDINGS_PINCTRL_TEGRA_H
+#define _DT_BINDINGS_PINCTRL_TEGRA_H
+
+/*
+ * Enable/disable for diffeent dt properties. This is applicable for
+ * properties nvidia,enable-input, nvidia,tristate, nvidia,open-drain,
+ * nvidia,lock, nvidia,rcv-sel, nvidia,high-speed-mode, nvidia,schmitt.
+ */
+#define TEGRA_PIN_DISABLE				0
+#define TEGRA_PIN_ENABLE				1
+
+#define TEGRA_PIN_PULL_NONE				0
+#define TEGRA_PIN_PULL_DOWN				1
+#define TEGRA_PIN_PULL_UP				2
+
+/* Low power mode driver */
+#define TEGRA_PIN_LP_DRIVE_DIV_8			0
+#define TEGRA_PIN_LP_DRIVE_DIV_4			1
+#define TEGRA_PIN_LP_DRIVE_DIV_2			2
+#define TEGRA_PIN_LP_DRIVE_DIV_1			3
+
+/* Rising/Falling slew rate */
+#define TEGRA_PIN_SLEW_RATE_FASTEST			0
+#define TEGRA_PIN_SLEW_RATE_FAST			1
+#define TEGRA_PIN_SLEW_RATE_SLOW			2
+#define TEGRA_PIN_SLEW_RATE_SLOWEST			3
+
+#endif
diff --git a/include/errno.h b/include/errno.h
index e24a33b386..14ac3cb10b 100644
--- a/include/errno.h
+++ b/include/errno.h
@@ -6,4 +6,7 @@ extern int errno;
 
 #define __set_errno(val) do { errno = val; } while (0)
 
+#ifdef CONFIG_ERRNO_STR
+const char *errno_str(int errno);
+#endif
 #endif /* _ERRNO_H */
diff --git a/include/i2c.h b/include/i2c.h
index 1b4078ed62..9c6a60cf9a 100644
--- a/include/i2c.h
+++ b/include/i2c.h
@@ -18,6 +18,355 @@
 #define _I2C_H_
 
 /*
+ * For now there are essentially two parts to this file - driver model
+ * here at the top, and the older code below (with CONFIG_SYS_I2C being
+ * most recent). The plan is to migrate everything to driver model.
+ * The driver model structures and API are separate as they are different
+ * enough as to be incompatible for compilation purposes.
+ */
+
+#ifdef CONFIG_DM_I2C
+
+enum dm_i2c_chip_flags {
+	DM_I2C_CHIP_10BIT	= 1 << 0, /* Use 10-bit addressing */
+	DM_I2C_CHIP_RD_ADDRESS	= 1 << 1, /* Send address for each read byte */
+	DM_I2C_CHIP_WR_ADDRESS	= 1 << 2, /* Send address for each write byte */
+};
+
+/**
+ * struct dm_i2c_chip - information about an i2c chip
+ *
+ * An I2C chip is a device on the I2C bus. It sits at a particular address
+ * and normally supports 7-bit or 10-bit addressing.
+ *
+ * To obtain this structure, use dev_get_parentdata(dev) where dev is the
+ * chip to examine.
+ *
+ * @chip_addr:	Chip address on bus
+ * @offset_len: Length of offset in bytes. A single byte offset can
+ *		represent up to 256 bytes. A value larger than 1 may be
+ *		needed for larger devices.
+ * @flags:	Flags for this chip (dm_i2c_chip_flags)
+ * @emul: Emulator for this chip address (only used for emulation)
+ */
+struct dm_i2c_chip {
+	uint chip_addr;
+	uint offset_len;
+	uint flags;
+#ifdef CONFIG_SANDBOX
+	struct udevice *emul;
+#endif
+};
+
+/**
+ * struct dm_i2c_bus- information about an i2c bus
+ *
+ * An I2C bus contains 0 or more chips on it, each at its own address. The
+ * bus can operate at different speeds (measured in Hz, typically 100KHz
+ * or 400KHz).
+ *
+ * To obtain this structure, use bus->uclass_priv where bus is the I2C
+ * bus udevice.
+ *
+ * @speed_hz: Bus speed in hertz (typically 100000)
+ */
+struct dm_i2c_bus {
+	int speed_hz;
+};
+
+/**
+ * i2c_read() - read bytes from an I2C chip
+ *
+ * To obtain an I2C device (called a 'chip') given the I2C bus address you
+ * can use i2c_get_chip(). To obtain a bus by bus number use
+ * uclass_get_device_by_seq(UCLASS_I2C, <bus number>).
+ *
+ * To set the address length of a devce use i2c_set_addr_len(). It
+ * defaults to 1.
+ *
+ * @dev:	Chip to read from
+ * @offset:	Offset within chip to start reading
+ * @buffer:	Place to put data
+ * @len:	Number of bytes to read
+ *
+ * @return 0 on success, -ve on failure
+ */
+int i2c_read(struct udevice *dev, uint offset, uint8_t *buffer,
+	     int len);
+
+/**
+ * i2c_write() - write bytes to an I2C chip
+ *
+ * See notes for i2c_read() above.
+ *
+ * @dev:	Chip to write to
+ * @offset:	Offset within chip to start writing
+ * @buffer:	Buffer containing data to write
+ * @len:	Number of bytes to write
+ *
+ * @return 0 on success, -ve on failure
+ */
+int i2c_write(struct udevice *dev, uint offset, const uint8_t *buffer,
+	      int len);
+
+/**
+ * i2c_probe() - probe a particular chip address
+ *
+ * This can be useful to check for the existence of a chip on the bus.
+ * It is typically implemented by writing the chip address to the bus
+ * and checking that the chip replies with an ACK.
+ *
+ * @bus:	Bus to probe
+ * @chip_addr:	7-bit address to probe (10-bit and others are not supported)
+ * @chip_flags:	Flags for the probe (see enum dm_i2c_chip_flags)
+ * @devp:	Returns the device found, or NULL if none
+ * @return 0 if a chip was found at that address, -ve if not
+ */
+int i2c_probe(struct udevice *bus, uint chip_addr, uint chip_flags,
+	      struct udevice **devp);
+
+/**
+ * i2c_set_bus_speed() - set the speed of a bus
+ *
+ * @bus:	Bus to adjust
+ * @speed:	Requested speed in Hz
+ * @return 0 if OK, -EINVAL for invalid values
+ */
+int i2c_set_bus_speed(struct udevice *bus, unsigned int speed);
+
+/**
+ * i2c_get_bus_speed() - get the speed of a bus
+ *
+ * @bus:	Bus to check
+ * @return speed of selected I2C bus in Hz, -ve on error
+ */
+int i2c_get_bus_speed(struct udevice *bus);
+
+/**
+ * i2c_set_chip_flags() - set flags for a chip
+ *
+ * Typically addresses are 7 bits, but for 10-bit addresses you should set
+ * flags to DM_I2C_CHIP_10BIT. All accesses will then use 10-bit addressing.
+ *
+ * @dev:	Chip to adjust
+ * @flags:	New flags
+ * @return 0 if OK, -EINVAL if value is unsupported, other -ve value on error
+ */
+int i2c_set_chip_flags(struct udevice *dev, uint flags);
+
+/**
+ * i2c_get_chip_flags() - get flags for a chip
+ *
+ * @dev:	Chip to check
+ * @flagsp:	Place to put flags
+ * @return 0 if OK, other -ve value on error
+ */
+int i2c_get_chip_flags(struct udevice *dev, uint *flagsp);
+
+/**
+ * i2c_set_offset_len() - set the offset length for a chip
+ *
+ * The offset used to access a chip may be up to 4 bytes long. Typically it
+ * is only 1 byte, which is enough for chips with 256 bytes of memory or
+ * registers. The default value is 1, but you can call this function to
+ * change it.
+ *
+ * @offset_len:	New offset length value (typically 1 or 2)
+ */
+
+int i2c_set_chip_offset_len(struct udevice *dev, uint offset_len);
+/**
+ * i2c_deblock() - recover a bus that is in an unknown state
+ *
+ * See the deblock() method in 'struct dm_i2c_ops' for full information
+ *
+ * @bus:	Bus to recover
+ * @return 0 if OK, -ve on error
+ */
+int i2c_deblock(struct udevice *bus);
+
+/*
+ * Not all of these flags are implemented in the U-Boot API
+ */
+enum dm_i2c_msg_flags {
+	I2C_M_TEN		= 0x0010, /* ten-bit chip address */
+	I2C_M_RD		= 0x0001, /* read data, from slave to master */
+	I2C_M_STOP		= 0x8000, /* send stop after this message */
+	I2C_M_NOSTART		= 0x4000, /* no start before this message */
+	I2C_M_REV_DIR_ADDR	= 0x2000, /* invert polarity of R/W bit */
+	I2C_M_IGNORE_NAK	= 0x1000, /* continue after NAK */
+	I2C_M_NO_RD_ACK		= 0x0800, /* skip the Ack bit on reads */
+	I2C_M_RECV_LEN		= 0x0400, /* length is first received byte */
+};
+
+/**
+ * struct i2c_msg - an I2C message
+ *
+ * @addr:	Slave address
+ * @flags:	Flags (see enum dm_i2c_msg_flags)
+ * @len:	Length of buffer in bytes, may be 0 for a probe
+ * @buf:	Buffer to send/receive, or NULL if no data
+ */
+struct i2c_msg {
+	uint addr;
+	uint flags;
+	uint len;
+	u8 *buf;
+};
+
+/**
+ * struct i2c_msg_list - a list of I2C messages
+ *
+ * This is called i2c_rdwr_ioctl_data in Linux but the name does not seem
+ * appropriate in U-Boot.
+ *
+ * @msg:	Pointer to i2c_msg array
+ * @nmsgs:	Number of elements in the array
+ */
+struct i2c_msg_list {
+	struct i2c_msg *msgs;
+	uint nmsgs;
+};
+
+/**
+ * struct dm_i2c_ops - driver operations for I2C uclass
+ *
+ * Drivers should support these operations unless otherwise noted. These
+ * operations are intended to be used by uclass code, not directly from
+ * other code.
+ */
+struct dm_i2c_ops {
+	/**
+	 * xfer() - transfer a list of I2C messages
+	 *
+	 * @bus:	Bus to read from
+	 * @msg:	List of messages to transfer
+	 * @nmsgs:	Number of messages in the list
+	 * @return 0 if OK, -EREMOTEIO if the slave did not ACK a byte,
+	 *	-ECOMM if the speed cannot be supported, -EPROTO if the chip
+	 *	flags cannot be supported, other -ve value on some other error
+	 */
+	int (*xfer)(struct udevice *bus, struct i2c_msg *msg, int nmsgs);
+
+	/**
+	 * probe_chip() - probe for the presense of a chip address
+	 *
+	 * This function is optional. If omitted, the uclass will send a zero
+	 * length message instead.
+	 *
+	 * @bus:	Bus to probe
+	 * @chip_addr:	Chip address to probe
+	 * @chip_flags:	Probe flags (enum dm_i2c_chip_flags)
+	 * @return 0 if chip was found, -EREMOTEIO if not, -ENOSYS to fall back
+	 * to default probem other -ve value on error
+	 */
+	int (*probe_chip)(struct udevice *bus, uint chip_addr, uint chip_flags);
+
+	/**
+	 * set_bus_speed() - set the speed of a bus (optional)
+	 *
+	 * The bus speed value will be updated by the uclass if this function
+	 * does not return an error. This method is optional - if it is not
+	 * provided then the driver can read the speed from
+	 * bus->uclass_priv->speed_hz
+	 *
+	 * @bus:	Bus to adjust
+	 * @speed:	Requested speed in Hz
+	 * @return 0 if OK, -EINVAL for invalid values
+	 */
+	int (*set_bus_speed)(struct udevice *bus, unsigned int speed);
+
+	/**
+	 * get_bus_speed() - get the speed of a bus (optional)
+	 *
+	 * Normally this can be provided by the uclass, but if you want your
+	 * driver to check the bus speed by looking at the hardware, you can
+	 * implement that here. This method is optional. This method would
+	 * normally be expected to return bus->uclass_priv->speed_hz.
+	 *
+	 * @bus:	Bus to check
+	 * @return speed of selected I2C bus in Hz, -ve on error
+	 */
+	int (*get_bus_speed)(struct udevice *bus);
+
+	/**
+	 * set_flags() - set the flags for a chip (optional)
+	 *
+	 * This is generally implemented by the uclass, but drivers can
+	 * check the value to ensure that unsupported options are not used.
+	 * This method is optional. If provided, this method will always be
+	 * called when the flags change.
+	 *
+	 * @dev:	Chip to adjust
+	 * @flags:	New flags value
+	 * @return 0 if OK, -EINVAL if value is unsupported
+	 */
+	int (*set_flags)(struct udevice *dev, uint flags);
+
+	/**
+	 * deblock() - recover a bus that is in an unknown state
+	 *
+	 * I2C is a synchronous protocol and resets of the processor in the
+	 * middle of an access can block the I2C Bus until a powerdown of
+	 * the full unit is done. This is because slaves can be stuck
+	 * waiting for addition bus transitions for a transaction that will
+	 * never complete. Resetting the I2C master does not help. The only
+	 * way is to force the bus through a series of transitions to make
+	 * sure that all slaves are done with the transaction. This method
+	 * performs this 'deblocking' if support by the driver.
+	 *
+	 * This method is optional.
+	 */
+	int (*deblock)(struct udevice *bus);
+};
+
+#define i2c_get_ops(dev)	((struct dm_i2c_ops *)(dev)->driver->ops)
+
+/**
+ * i2c_get_chip() - get a device to use to access a chip on a bus
+ *
+ * This returns the device for the given chip address. The device can then
+ * be used with calls to i2c_read(), i2c_write(), i2c_probe(), etc.
+ *
+ * @bus:	Bus to examine
+ * @chip_addr:	Chip address for the new device
+ * @devp:	Returns pointer to new device if found or -ENODEV if not
+ *		found
+ */
+int i2c_get_chip(struct udevice *bus, uint chip_addr, struct udevice **devp);
+
+/**
+ * i2c_get_chip() - get a device to use to access a chip on a bus number
+ *
+ * This returns the device for the given chip address on a particular bus
+ * number.
+ *
+ * @busnum:	Bus number to examine
+ * @chip_addr:	Chip address for the new device
+ * @devp:	Returns pointer to new device if found or -ENODEV if not
+ *		found
+ */
+int i2c_get_chip_for_busnum(int busnum, int chip_addr, struct udevice **devp);
+
+/**
+ * i2c_chip_ofdata_to_platdata() - Decode standard I2C platform data
+ *
+ * This decodes the chip address from a device tree node and puts it into
+ * its dm_i2c_chip structure. This should be called in your driver's
+ * ofdata_to_platdata() method.
+ *
+ * @blob:	Device tree blob
+ * @node:	Node offset to read from
+ * @spi:	Place to put the decoded information
+ */
+int i2c_chip_ofdata_to_platdata(const void *blob, int node,
+				struct dm_i2c_chip *chip);
+
+#endif
+
+#ifndef CONFIG_DM_I2C
+
+/*
  * WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
  *
  * The implementation MUST NOT use static or global variables if the
@@ -451,4 +800,7 @@ int i2c_get_bus_num_fdt(int node);
  * @return 0 if port was reset, -1 if not found
  */
 int i2c_reset_port_fdt(const void *blob, int node);
+
+#endif /* !CONFIG_DM_I2C */
+
 #endif	/* _I2C_H_ */
diff --git a/include/i2c_eeprom.h b/include/i2c_eeprom.h
new file mode 100644
index 0000000000..ea6c962a39
--- /dev/null
+++ b/include/i2c_eeprom.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2014 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __I2C_EEPROM
+#define __I2C_EEPROM
+
+struct i2c_eeprom_ops {
+	int (*read)(struct udevice *dev, int offset, uint8_t *buf, int size);
+	int (*write)(struct udevice *dev, int offset, const uint8_t *buf,
+		     int size);
+};
+
+struct i2c_eeprom {
+};
+
+#endif
diff --git a/include/linux/string.h b/include/linux/string.h
index 96348d617f..c7047ba0bc 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -30,6 +30,9 @@ extern char * strcpy(char *,const char *);
 #ifndef __HAVE_ARCH_STRNCPY
 extern char * strncpy(char *,const char *, __kernel_size_t);
 #endif
+#ifndef __HAVE_ARCH_STRLCPY
+size_t strlcpy(char *, const char *, size_t);
+#endif
 #ifndef __HAVE_ARCH_STRCAT
 extern char * strcat(char *, const char *);
 #endif
diff --git a/include/tps6586x.h b/include/tps6586x.h
index 78ce428767..eefc95f22e 100644
--- a/include/tps6586x.h
+++ b/include/tps6586x.h
@@ -44,9 +44,9 @@ int tps6586x_adjust_sm0_sm1(int sm0_target, int sm1_target, int step, int rate,
  * Set up the TPS6586X I2C bus number. This will be used for all operations
  * on the device. This function must be called before using other functions.
  *
- * @param bus	I2C bus number containing the TPS6586X chip
+ * @param bus	I2C bus containing the TPS6586X chip
  * @return 0 (always succeeds)
  */
-int tps6586x_init(int bus);
+int tps6586x_init(struct udevice *bus);
 
 #endif	/* _TPS6586X_H_ */